Hatsune Miku: Project DIVA MEGA39s (Project Diva, sequel to Hatsune Miku: Project DIVA Future Tone) is a series of musical rhythm games developed and published by Sega and Crypton Future Media.The main feature of the entire series is the use of Vocaloid technology, which includes songs performed using this program.The main protagonist of the main Hatsune Miku: Project DIVA series and its spin-offs is the vocaloid Hatsune Miku.At the same time, other vocaloids often appear here, most of them developed by Crypton Future Media, such as: Kagamine Rin / Len, Megurine Luka, Meiko, Kaito.